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4f77a99095
I was reminded today that this patch got reverted in r301885. I can no longer reproduce the failure that caused the revert locally (...almost one year later), and the patch applied pretty cleanly, so I guess we'll see if the bots still get angry about it. The original breakage was InstSimplify complaining (in "assertion failed" form) about getting passed some crazy IR when running `ninja check-sanitizer`. I'm unable to find traces of what, exactly, said crazy IR was. I suppose we'll find out pretty soon if that's still the case. :) Original commit: Author: gbiv Date: Mon May 1 18:12:08 2017 New Revision: 301880 URL: http://llvm.org/viewvc/llvm-project?rev=301880&view=rev Log: [InstSimplify] Handle selects of GEPs with 0 offset In particular (since it wouldn't fit nicely in the summary): (select (icmp eq V 0) P (getelementptr P V)) -> (getelementptr P V) Differential Revision: https://reviews.llvm.org/D31435 llvm-svn: 330667